President Barack Obama, with U.S. Secret Service Special-Agent-In_Charge, Rob Buster, leaves the motorcade at Denver International Airport, prior to departure from Denver, Colorado en route to Dallas, Texas, July 9, 2014.

President Barack Obama, with U.S. Secret Service Special-Agent-In_Charge, Rob Buster, leaves the motorcade at Denver International Airport, prior to departure from Denver, Colorado en route to Dallas, Texas, July 9, 2014.

President Barack Obama greets a young girl after he delivered remarks on the economy at Cheesman Park in Denver, Colo., July 9, 2014.

President Barack Obama greets a young girl after he delivered remarks on the economy at Cheesman Park in Denver, Colo., July 9, 2014.

July 8, 2014 "The President whistles along to Van Morrison’s ‘Brown-Eyed Girl’ while shooting pool with Colorado Gov. John Hickenlooper in Denver, Colorado. The President took great pride in beating the Governor at the bar the Governor founded." (Official White House Photo by Pete Souza) This official White House photograph is being made available only for publication by news organizations and/or for personal use printing by the subject(s) of the photograph. The photograph may not be manipulated in any way and may not be used in commercial or political materials, advertisements, emails, products, promotions that in any way suggests approval or endorsement of the President, the First Family, or the White House.

July 8, 2014
"The President whistles along to Van Morrison's 'Brown-Eyed Girl' while shooting pool with Colorado Gov. John Hickenlooper in Denver, Colorado. The President took great pride in beating the Governor at the bar the Governor founded." 
(Official White House Photo by Pete Souza)


This official White House photograph is being made available only for publication by news organizations and/or for personal use printing by the subject(s) of the photograph. The photograph may not be manipulated in any way and may not be used in commercial or political materials, advertisements, emails, products, promotions that in any way suggests approval or endorsement of the President, the First Family, or the White House.

President Barack Obama whistles along to the music as he shoots pool with Colorado Gov. John Hickenlooper in Denver, Colo., July 8, 2014.

President Barack Obama whistles along to the music as he shoots pool with Colorado Gov. John Hickenlooper in Denver, Colo., July 8, 2014.

July 8, 2014 "A woman slips a note into the President’s front shirt pocket as he greeted pedestrians during an impromptu walk in downtown Denver, Colorado." (Official White House Photo by Pete Souza) This official White House photograph is being made available only for publication by news organizations and/or for personal use printing by the subject(s) of the photograph. The photograph may not be manipulated in any way and may not be used in commercial or political materials, advertisements, emails, products, promotions that in any way suggests approval or endorsement of the President, the First Family, or the White House.

July 8, 2014
"A woman slips a note into the President's front shirt pocket as he greeted pedestrians during an impromptu walk in downtown Denver, Colorado."
(Official White House Photo by Pete Souza)

This official White House photograph is being made available only for publication by news organizations and/or for personal use printing by the subject(s) of the photograph. The photograph may not be manipulated in any way and may not be used in commercial or political materials, advertisements, emails, products, promotions that in any way suggests approval or endorsement of the President, the First Family, or the White House.

A woman slips her business card in the shirt pocket of President Barack Obama, who was greeting people during a walk downtown in Denver, Colo., July 8, 2014.

A woman slips her business card in the shirt pocket of President Barack Obama, who was greeting people during a walk downtown in Denver, Colo., July 8, 2014.

President Barack Obama greets a young boy on the street in Denver, Colo., July 8, 2014.

President Barack Obama greets a young boy on the street in Denver, Colo., July 8, 2014.

President Barack Obama shares a pizza dinner with individuals who wrote letters to him, at the Wazee Supper Club in Denver, Colo., July 8, 2014.

President Barack Obama shares a pizza dinner with individuals who wrote letters to him, at the Wazee Supper Club in Denver, Colo., July 8, 2014.

May 28, 2014 "Cadets toss their hats in the air as the Thunderbirds fly over Falcon Stadium at the United States Air Force Academy Commencement ceremony, in Colorado Springs, Colorado." (Official White House Photo by David Lienemann) This official White House photograph is being made available only for publication by news organizations and/or for personal use printing by the subject(s) of the photograph. The photograph may not be manipulated in any way and may not be used in commercial or political materials, advertisements, emails, products, promotions that in any way suggests approval or endorsement of the President, the First Family, or the White House.

May 28, 2014
"Cadets toss their hats in the air as the Thunderbirds fly over Falcon Stadium at the United States Air Force Academy Commencement ceremony, in Colorado Springs, Colorado." 
(Official White House Photo by David Lienemann)

This official White House photograph is being made available only for publication by news organizations and/or for personal use printing by the subject(s) of the photograph. The photograph may not be manipulated in any way and may not be used in commercial or political materials, advertisements, emails, products, promotions that in any way suggests approval or endorsement of the President, the First Family, or the White House.

President Barack Obama hugs Sue Connors and Jane Dougherty, right, following his remarks at the Denver Police Academy in Denver, Colo., April 3, 2013. The women lost their sister, Mary Sherlach, in the Sandy Hook Elementary School shootings.

President Barack Obama hugs Sue Connors and Jane Dougherty, right, following his remarks at the Denver Police Academy in Denver, Colo., April 3, 2013. The women lost their sister, Mary Sherlach, in the Sandy Hook Elementary School shootings.